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[Bug 1488049] Re: ubuntu14.04(3.13.0-37.64), kernel crash (mapcount 0 page_mapcount 1)

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: gaoliang <gaoliang0926@xxxxxx>
Date: Tue, 25 Aug 2015 08:11:32 -0000
Reply-to: Bug 1488049 <1488049@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
hey

sorry,not able to connect to Internet.

memory usage is close to 100 percent.There are many running kvm virtual
machines then.

mem：256G
cpu： 24

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https://bugs.launchpad.net/bugs/1488049

Title:
  ubuntu14.04(3.13.0-37.64),kernel crash (mapcount 0 page_mapcount 1)

Status in linux package in Ubuntu:
  Confirmed

Bug description:
   Bug Description:

  this issue（mapcount 0 page_mapcount 1） has already been resolved by 3.13.0-36, but this bug arised. 
  memory usage is close to 100 percent.

  Here is I believe the first record in syslog when it starts:

  Jul  3 09:50:08 GMQ kernel: [2764507.350057] sd 1:0:0:22: [sdd] Test WP failed, assume Write Enabled
  Jul  3 09:50:08 GMQ kernel: [2764507.350210] sd 1:0:0:22: [sdd] Asking for cache data failed
  Jul  3 09:50:08 GMQ kernel: [2764507.350220] sd 1:0:0:22: [sdd] Assuming drive cache: write through
  Jul  3 09:50:08 GMQ kernel: [2764507.654448] mapcount 0 page_mapcount 1
  Jul  3 09:50:08 GMQ kernel: [2764507.654556] ------------[ cut here ]------------
  Jul  3 09:50:08 GMQ kernel: [2764507.654561] Kernel BUG at ffffffff811b23bc [verbose debug info unavailable]
  Jul  3 09:50:08 GMQ kernel: [2764507.654566] invalid opcode: 0000 [#1] SMP 
  Jul  3 09:50:08 GMQ kernel: [2764507.654570] Modules linked in: ip6table_filter(F) ip6_tables(F) iptable_filter(F) i]
  Jul  3 09:50:08 GMQ kernel: [2764507.654663] CPU: 25 PID: 613 Comm: kswapd3 Tainted: GF          O 3.13. #1
  Jul  3 09:50:08 GMQ kernel: [2764507.654667] Hardware name: H3C FlexServer R590, BIOS P77 12/20/2013
  Jul  3 09:50:08 GMQ kernel: [2764507.654670] task: ffff880fe7c8c830 ti: ffff880fe6c7e000 task.ti: fff880fe6c7e000
  Jul  3 09:50:08 GMQ kernel: [2764507.654674] RIP: 0010:[<ffffffff811b23bc>]  [<ffffffff811b23bc>] split_huge_page_to_list+0x2dc/0x7b0
  Jul  3 09:50:08 GMQ kernel: [2764507.654689] RSP: 0018:ffff880fe6c7f858  EFLAGS: 00010297
  Jul  3 09:50:08 GMQ kernel: [2764507.654692] RAX: 0000000000000001 RBX: ffff883fde776f18 RCX: 0000000000000000
  Jul  3 09:50:08 GMQ kernel: [2764507.654695] RDX: ffff88403f82fff0 RSI: ffff88403f82e3d8 RDI: 0000000000000246
  Jul  3 09:50:08 GMQ kernel: [2764507.654699] RBP: ffff880fe6c7f918 R08: 0000000000000000 R09: 0000000000000000
  Jul  3 09:50:08 GMQ kernel: [2764507.654702] R10: 00000000001eb0af R11: 0e200e200e200e20 R12: 0000000000000000
  Jul  3 09:50:08 GMQ kernel: [2764507.654706] R13: ffff881fe681aa00 R14: ffffea00f4ae8000 R15: ffffea00f4ae8000
  Jul  3 09:50:08 GMQ kernel: [2764507.654710] FS:  0000000000000000(0000) GS:ffff88403f820000(0000) knlGS:0000000000000000
  Jul  3 09:50:08 GMQ kernel: [2764507.654713] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  Jul  3 09:50:08 GMQ kernel: [2764507.654716] CR2: 000000003bfc2000 CR3: 0000000001c0d000 CR4: 00000000000427e0
  Jul  3 09:50:08 GMQ kernel: [2764507.654720] DR0: 0000000000000003 DR1: 00000000000000b0 DR2: 0000000000000001
  Jul  3 09:50:08 GMQ kernel: [2764507.654724] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  Jul  3 09:50:08 GMQ kernel: [2764507.654726] Stack:
  Jul  3 09:50:08 GMQ kernel: [2764507.654729]  ffffea00f4ae8000 ffff880fe5bc6980 ffff880f00000000 ffffffff81193bba
  Jul  3 09:50:08 GMQ kernel: [2764507.654741]  ffff883fe75c6300 00000007f4474000 0000000000042541 0000000000042541
  Jul  3 09:50:08 GMQ kernel: [2764507.654748]  00000000e6c7f8f8 0000000000000000 00000007f4534200 ffff883fe75c6330
  Jul  3 09:50:08 GMQ kernel: [2764507.654756] Call Trace:
  Jul  3 09:50:08 GMQ kernel: [2764507.654778]  [<ffffffff81193bba>] ? scan_swap_map+0x37a/0x510
  Jul  3 09:50:08 GMQ kernel: [2764507.654783]  [<ffffffff81193faa>] ? get_swap_page+0x1aa/0x210
  Jul  3 09:50:08 GMQ kernel: [2764507.654792]  [<ffffffff81189df0>] ? page_mkclean_one+0xd0/0xd0
  Jul  3 09:50:08 GMQ kernel: [2764507.654798]  [<ffffffff8119190a>] add_to_swap+0x8a/0xa0
  Jul  3 09:50:08 GMQ kernel: [2764507.654811]  [<ffffffff811674fb>] shrink_page_list+0x5db/0xa30
  Jul  3 09:50:08 GMQ kernel: [2764507.654826]  [<ffffffff8116804a>] shrink_inactive_list+0x1ea/0x5b0
  Jul  3 09:50:08 GMQ kernel: [2764507.654832]  [<ffffffff81168b5c>] shrink_lruvec+0x35c/0x6e0
  Jul  3 09:50:08 GMQ kernel: [2764507.654838]  [<ffffffff81168f46>] shrink_zone+0x66/0x1a0
  Jul  3 09:50:08 GMQ kernel: [2764507.654843]  [<ffffffff8116a11e>] balance_pgdat+0x3be/0x620
  Jul  3 09:50:08 GMQ kernel: [2764507.654854]  [<ffffffff810760d2>] ? del_timer_sync+0x52/0x60
  Jul  3 09:50:08 GMQ kernel: [2764507.654859]  [<ffffffff8116a4f7>] kswapd+0x177/0x4a0
  Jul  3 09:50:08 GMQ kernel: [2764507.654870]  [<ffffffff810adb20>] ? __wake_up_sync+0x20/0x20
  Jul  3 09:50:08 GMQ kernel: [2764507.654875]  [<ffffffff8116a380>] ? balance_pgdat+0x620/0x620
  Jul  3 09:50:08 GMQ kernel: [2764507.654883]  [<ffffffff8108d079>] kthread+0xc9/0xe0
  Jul  3 09:50:08 GMQ kernel: [2764507.654889]  [<ffffffff8108cfb0>] ? flush_kthread_worker+0xb0/0xb0
  Jul  3 09:50:08 GMQ kernel: [2764507.654900]  [<ffffffff81760ffc>] ret_from_fork+0x7c/0xb0
  Jul  3 09:50:08 GMQ kernel: [2764507.654905]  [<ffffffff8108cfb0>] ? flush_kthread_worker+0xb0/0xb0
  Jul  3 09:50:08 GMQ kernel: [2764507.654908] Code: df 48 89 43 08 4c 89 e8 49 03 46 10 48 89 43 10 41 0f b7 76 05 e8 f5 f3 fb ff f6 43 08 01 74 0b 48 8b 03 a8 08 0f 85 34 ff ff ff <0f> 0b f3 90 49 8b 06 a9 00 00 00 01 75 f4 e9 f8 fe ff ff 90 f0 
  Jul  3 09:50:08 GMQ kernel: [2764507.654946] RIP  [<ffffffff811b23bc>] split_huge_page_to_list+0x2dc/0x7b0
  Jul  3 09:50:08 GMQ kernel: [2764507.654950]  RSP <ffff880fe6c7f858>
  Jul  3 09:50:08 GMQ kernel: [2764507.725793] ---[ end trace 0c60ca2f2aae4c6c ]---
  Jul  3 09:50:09 GMQ kernel: [2764507.742363] ------------[ cut here ]------------
  Jul  3 09:50:09 GMQ kernel: [2764507.742380] WARNING: CPU: 25 PID: 613 at kernel/exit.c:704 do_exit+0x55/0xa70()
  Jul  3 09:50:09 GMQ kernel: [2764507.742384] Modules linked in: ip6table_filter(F) ip6_tables(F) iptable_filter(F) ip_tables(F) ebtable_nat(F) nbd(F) [last unloaded: ipmi_si]
  Jul  3 09:50:09 GMQ kernel: [2764507.742495] CPU: 25 PID: 613 Comm: kswapd3 Tainted: GF     D    O 3.13.6 #1
  Jul  3 09:50:09 GMQ kernel: [2764507.742499] Hardware name: H3C FlexServer R590, BIOS P77 12/20/2013
  Jul  3 09:50:09 GMQ kernel: [2764507.742503]  00000000000002c0 ffff880fe6c7f548 ffffffff81750690 0000000000000007
  Jul  3 09:50:09 GMQ kernel: [2764507.742513]  0000000000000000 ffff880fe6c7f588 ffffffff81068c6c 000000000000000b
  Jul  3 09:50:09 GMQ kernel: [2764507.742521]  ffff880fe7c8c830 000000000000000b ffff880fe6c7f7a8 0000000000000000
  Jul  3 09:50:09 GMQ kernel: [2764507.742531] Call Trace:
  Jul  3 09:50:09 GMQ kernel: [2764507.742547]  [<ffffffff81750690>] dump_stack+0x46/0x58
  Jul  3 09:50:09 GMQ kernel: [2764507.742553]  [<ffffffff81068c6c>] warn_slowpath_common+0x8c/0xc0
  Jul  3 09:50:09 GMQ kernel: [2764507.742558]  [<ffffffff81068cba>] warn_slowpath_null+0x1a/0x20
  Jul  3 09:50:09 GMQ kernel: [2764507.742563]  [<ffffffff8106aff5>] do_exit+0x55/0xa70
  Jul  3 09:50:09 GMQ kernel: [2764507.742584]  [<ffffffff810c13dc>] ? kmsg_dump+0x9c/0xc0
  Jul  3 09:50:09 GMQ kernel: [2764507.742595]  [<ffffffff817599b8>] oops_end+0xb8/0x160
  Jul  3 09:50:09 GMQ kernel: [2764507.742605]  [<ffffffff810183e8>] die+0x58/0x90
  Jul  3 09:50:09 GMQ kernel: [2764507.742610]  [<ffffffff8175914b>] do_trap+0xcb/0x170
  Jul  3 09:50:09 GMQ kernel: [2764507.742616]  [<ffffffff8101557c>] do_invalid_op+0xac/0x110
  Jul  3 09:50:09 GMQ kernel: [2764507.742625]  [<ffffffff811b23bc>] ? split_huge_page_to_list+0x2dc/0x7b0
  Jul  3 09:50:09 GMQ kernel: [2764507.742631]  [<ffffffff810bfa04>] ? wake_up_klogd+0x34/0x40
  Jul  3 09:50:09 GMQ kernel: [2764507.742636]  [<ffffffff810bfca5>] ? console_unlock+0x295/0x3e0
  Jul  3 09:50:09 GMQ kernel: [2764507.742643]  [<ffffffff817628de>] invalid_op+0x1e/0x30
  Jul  3 09:50:09 GMQ kernel: [2764507.742648]  [<ffffffff811b23bc>] ? split_huge_page_to_list+0x2dc/0x7b0
  Jul  3 09:50:09 GMQ kernel: [2764507.742652]  [<ffffffff811b2862>] ? split_huge_page_to_list+0x782/0x7b0
  Jul  3 09:50:09 GMQ kernel: [2764507.742662]  [<ffffffff81193bba>] ? scan_swap_map+0x37a/0x510
  Jul  3 09:50:09 GMQ kernel: [2764507.742667]  [<ffffffff81193faa>] ? get_swap_page+0x1aa/0x210
  Jul  3 09:50:09 GMQ kernel: [2764507.742676]  [<ffffffff81189df0>] ? page_mkclean_one+0xd0/0xd0
  Jul  3 09:50:09 GMQ kernel: [2764507.742681]  [<ffffffff8119190a>] add_to_swap+0x8a/0xa0
  Jul  3 09:50:09 GMQ kernel: [2764507.742703]  [<ffffffff811674fb>] shrink_page_list+0x5db/0xa30
  Jul  3 09:50:09 GMQ kernel: [2764507.742710]  [<ffffffff8116804a>] shrink_inactive_list+0x1ea/0x5b0
  Jul  3 09:50:09 GMQ kernel: [2764507.742715]  [<ffffffff81168b5c>] shrink_lruvec+0x35c/0x6e0
  Jul  3 09:50:09 GMQ kernel: [2764507.742722]  [<ffffffff81168f46>] shrink_zone+0x66/0x1a0
  Jul  3 09:50:09 GMQ kernel: [2764507.742728]  [<ffffffff8116a11e>] balance_pgdat+0x3be/0x620
  Jul  3 09:50:09 GMQ kernel: [2764507.742735]  [<ffffffff810760d2>] ? del_timer_sync+0x52/0x60
  Jul  3 09:50:09 GMQ kernel: [2764507.742741]  [<ffffffff8116a4f7>] kswapd+0x177/0x4a0
  Jul  3 09:50:09 GMQ kernel: [2764507.742751]  [<ffffffff810adb20>] ? __wake_up_sync+0x20/0x20
  Jul  3 09:50:09 GMQ kernel: [2764507.742756]  [<ffffffff8116a380>] ? balance_pgdat+0x620/0x620
  Jul  3 09:50:09 GMQ kernel: [2764507.742767]  [<ffffffff8108d079>] kthread+0xc9/0xe0
  Jul  3 09:50:09 GMQ kernel: [2764507.742771]  [<ffffffff8108cfb0>] ? flush_kthread_worker+0xb0/0xb0
  Jul  3 09:50:09 GMQ kernel: [2764507.742777]  [<ffffffff81760ffc>] ret_from_fork+0x7c/0xb0
  Jul  3 09:50:09 GMQ kernel: [2764507.742781]  [<ffffffff8108cfb0>] ? flush_kthread_worker+0xb0/0xb0
  Jul  3 09:50:09 GMQ kernel: [2764507.742784] ---[ end trace 0c60ca2f2aae4c6d ]---

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